Reproduction in livestock brian louw introduction a feature of successful livestock production systems is that animals reproduce regularly the reproductive process is influenced mainly by the way in which animals are managed and fed genetic factors exert little influence on the way animals reproduce the challenge facing livestock producers and especially those involved in producing . Animal reproduction reproductive success in livestock is essential for the economic livelihood of producers and ultimately affects the consumer cost of meat and other animal products in many livestock production systems poor fertility is a major factor that limits productivity nifa provides funding for basic and applied research in animal reproduction and supports extension and education . During the early stages of the embryos life the genital system of both sexes develops in exactly the same way sexual differentiation occurs in cattle at an earlier stage than in almost any other mammal starting when the foetus is about 40 days old. In cattle ai is used primarily for genetic improvement of livestock and to facilitate high health replacement strategies the worldwide adoption of ai for genetic improvement in dairy cattle was made possible by development of a progeny test system and subsequent use of milk production records as an objective measure of performance on which to select superior bulls techniques for freezing
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